Version Description
7.8.1.0 Introduced on the C-Series and S-Series on Layer 3
interfaces.
Usage
Information When enabled, no learning takes place until you enable snooping on a VLAN. After
disabling DHCP snooping, the binding table deletes and Option 82, IP Source
Guard, and Dynamic ARP Inspection are disabled.
DHCP snooping supports Layer 3 using DHCP Relay Agent (ip helper-address)
and Layer 2. You do not have to enable relay agent to snoop on Layer 2 interfaces.
Related
Commands
ip dhcp snooping vlan — enables DHCP snooping on one or more VLANs.
ipv6 dhcp snooping
Enable DHCPv6 snooping globally for ipv6.
Syntax [no] ipv6 dhcp snooping
To disable the snooping globally, use the no ipv6 dhcp snooping command.
Defaults Disabled
Command
Modes
CONFIGURATION
Command
History This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.7(0.0) Introduced on the S4810, S4820T, S6000 and Z-Series.
ip dhcp snooping binding
Create a static entry in the DHCP binding table.
Z9500
Syntax [no] ip dhcp snooping binding mac address vlan-id vlan-id ip
ip-address interface type slot/port lease number
Parameters mac address Enter the keyword mac then the MAC address of the host to
which the server is leasing the IP address.
vlan-id vlan-id Enter the keywords vlan-id then the VLAN to which the
host belongs. The range is from 2 to 4094.
726 Dynamic Host Configuration Protocol (DHCP)